[Equest-users] Daikin heat pump curves

Bishop, Bill bbishop at pathfinder-ea.com
Fri Mar 14 11:08:44 PDT 2014


Daikin has two different downloads for eQUEST - one for VRV<http://www.daikinac.com/content/resources/software-tools/> and one for WSHP<http://www.daikinapplied.com/equest.php>. They are on different websites so you might not know about both unless you went looking for them.

Byron,
Regarding the VRV curve, I suspect there are too many characters in line 40 and the “e-002” is getting truncated to “e-00”. Try putting the last three coefficients on line 41 (in the input file), instead of just the last two.

Regards,
Bill

William Bishop, PE, BEMP, BEAP, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer

[webCertified_logo_colorRGB72DPI.jpg]



134 South Fitzhugh Street                 Rochester, NY 14608

T: (585) 698-1956                        F: (585) 325-6005

bbishop at pathfinder-ea.com<mailto:wbishop at pathfinder-ea.com>             www.pathfinder-ea.com<http://www.pathfinder-ea.com/>

[earth for signature]Sustainability – the forest AND the trees.



From: Byron Burns [mailto:B.Burns at ha-inc.com]
Sent: Friday, March 14, 2014 1:55 PM
To: Bishop, Bill
Cc: eQUEST Users List
Subject: RE: [Equest-users] Daikin heat pump curves

Hello Bill,

Notice in the screen shots below, curve coefficient d is supposed to be 0.07145853, however it was imported as 7.145853.  Not sure what caused it but just know it took me a while and a lot of cussing to track it down.  The other curves seem to import coefficient d just fine, but for some reason this one would not do it right.

Has anyone else noticed this issue?

The data file from Daikin
[cid:image005.jpg at 01CF3F8D.F2F2C9D0]


How eQUEST reads it in.
[cid:image006.jpg at 01CF3F8D.F2F2C9D0]


Byron D. Burns, EIT, BEMP
Energy Analyst/ Modeler

H&A Architects & Engineers | www.ha-inc.com<http://www.ha-inc.com>
d: (804) 420-1622 p: (804) 285-4171 f: (804) 217-8520

From: Bishop, Bill [mailto:bbishop at pathfinder-ea.com]
Sent: Friday, March 14, 2014 1:36 PM
To: Byron Burns
Subject: RE: [Equest-users] Daikin heat pump curves

Hi Byron,
Do you know which curve it was?
Thanks,
Bill

William Bishop, PE, BEMP, BEAP, LEED AP | Pathfinder Engineers & Architects LLP
Senior Energy Engineer

[webCertified_logo_colorRGB72DPI.jpg]



134 South Fitzhugh Street                 Rochester, NY 14608

T: (585) 698-1956                        F: (585) 325-6005

bbishop at pathfinder-ea.com<mailto:wbishop at pathfinder-ea.com>             www.pathfinder-ea.com<http://www.pathfinder-ea.com/>

[earth for signature]Sustainability – the forest AND the trees.



From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Byron Burns
Sent: Friday, March 14, 2014 1:33 PM
To: Kari; ssavich at systemswestengineers.com<mailto:ssavich at systemswestengineers.com>
Cc: eQUEST Users List
Subject: Re: [Equest-users] Daikin heat pump curves

I just did the same thing for a project, however there was an error created by eQUEST during the importing process and one of the curve coefficients was off by an order of magnitude.  I would recommend verifying the .inp after importing.  Definitely makes it nice and saves some time though.


Byron D. Burns, EIT, BEMP
Energy Analyst/ Modeler

H&A Architects & Engineers | www.ha-inc.com<http://www.ha-inc.com>
d: (804) 420-1622 p: (804) 285-4171 f: (804) 217-8520
From: equest-users-bounces at lists.onebuilding.org<mailto:equest-users-bounces at lists.onebuilding.org> [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Kari
Sent: Friday, March 14, 2014 1:17 PM
To: ssavich at systemswestengineers.com<mailto:ssavich at systemswestengineers.com>
Cc: eQUEST Users List
Subject: Re: [Equest-users] Daikin heat pump curves

Daikin/McQuay sample .inp folders worked great for a geothermal model we were building for a job in Colorado.  It was as simple as saving the sample .inp to the project file and choosing "Import File" to load the system information.

Kari Mueller, PE, LEED AP

On Mar 14, 2014, at 10:03 AM, "Steven Savich" <ssavich at systemswestengineers.com<mailto:ssavich at systemswestengineers.com>> wrote:
eQuesters:

My local Daikin rep informed me that Daikin has begun creating .inp files with curves for Daikin/McQuay heat pump products.  The following link takes you to a download site (registration req’d) to download the .inp file, a modeling guide, and a sample file.

http://www.daikinapplied.com/equest.php

I don’t have a heat pump simulation project right now, so don’t have time to look at the .inp in detail, but a surface skim through the modeling guide looks like Daikin put some thought and effort in.  Nice to see support for modeling from manufacturers.

Happy Pi day!

Steven Savich, LEED AP
Mechanical Designer, Energy Analyst

<image001.jpg>Systems West Engineers
411 High Street
Eugene, OR  97401-2427
p. 541.342.7210
f.  541.342.7220
systemswestengineers.com<http://systemswestengineers.com>

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